/**
 * 不透露实际地址的文件下载
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/
function download_document($filename,$path = "",$mimetype = "application/octet-stream")
{
 header("Cache-Control: must-revalidate,post-check=0,pre-check=0");
 header("Content-Disposition: attachment; filename = $filename");
 header("Content-Length: " . filesize($pathto . $filename));
 header("Content-Type: $mimetype");
 echo file_get_contents($pathto . $filename);
}


/***   代码来自编程之家 jb51.cc（jb51.cc）   ***/